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Finding the Fourth Proportional to 99,154.60, 136,795.70 and 65,181.40

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Solution

The fourth proportional to 99,154.60, 136,795.70 and 65,181.40 is: 89,925.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,154.60 : 136,795.70 = 65,181.40 : x
  2. Step 2: Convert to fraction form
    99,154.60/136,795.70 = 65,181.40/x
  3. Step 3: Cross multiply
    99,154.60x = 136,795.70 × 65,181.40
  4. Step 4: Simplify right side
    99,154.60x = 8,916,535,239.98
  5. Step 5: Solve for x
    x = 8,916,535,239.98/99,154.60
  6. Step 6: Final answer
    x = 89,925.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.